Headphone headband



FIG. 1 is a perspective view of a headphone headband as seen from the front and left side;

FIG. 2 is a perspective view thereof as seen from the front and right side;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a perspective view thereof as seen from the left side and bottom;

FIG. 8 is a perspective view thereof as seen from the right side and bottom;

FIG. 9 is a top end view thereof; and,

FIG. 10 is a bottom end view thereof.

The dotted line portions of the drawings represent environmental structure only and do not form part of the claimed design. 

CLAIM The ornamental design for a headphone headband, substantially as shown and described. 